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dit: rps/rsp
jwb
maka sudut spw 90° karena sudut spr 45° dan pqr= yaitu 100°
sudut qps= 360°-(100°+100°+90°)=360°-290°= 70°
rps= 70 ÷2=35°
6x - 31= 3x -1
6x - 3x = 31 - 1
3x = 30
x=30 ÷ 3 = 10 cm
2x + 3
2.10+3
20+3 =23